The Grocery Geek originally shared the hot tip with its 10,000 followers on Facebook, telling them it was returning "later this month".

"It is strongly rumoured that Cadbury is re-releasing its very popular Caramilk later this month…. stay tuned! - thanks to 'S' for the heads-up," the post read, alongside an image of the highly sought-after bar.

As a result, people have got very excited, planning ways they'll be able to get their mitts on a block (or five) of the rare chockie.

Despite being sold in Woolworths and Coles as well as servos and convenience stores, the blocks were so hard to find they were being sold on eBay for as much as $150.

When stocks ran out and there were no more to be snagged on eBay, a change.org petition began that had more than 18,000 supporters.

"Cadbury brought out the most delicious chocolate of all time CARAMILK. It has been so successful and yet Cadbury will stop producing it. HOW DARE THEY!" it read.

The comeback was also hit with a shocking setback when some of the limited-edition bars had to be recalled.

"A limited number of Cadbury Caramilk products have been found to contain small, flexible pieces of food grade plastic as a result of a machinery fault during the manufacturing process," a statement from the confectionary giant read.

FOOD RECALL: Cadbury Caramilk in Australia. For further information, please contact Mondelēz International on 1800 034...